Feeding mechanism for sewing-machines.



Mon 802,789 PATENTED OCT. 24, 1905. R. G. WOODWARD. FEEDING MECHANISM FOR SEWING MACHINES.

APPLICATION FILED NOV. 9, 1903.

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No. 802,789. PATENTED OUT. 24, 19051 R. G. WOODWARD. FEEDING MECHANISM FOR SEWING MACHINES.

APPLIGATION FILED NOV. 9, 1901.

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0 oi U L 33% UNITED STATES PATENT orrron.

.RUSSEL G. WOODWARD, OF I/VAUKEG-AN, ILLINOIS, ASSIGNOR TO UNION SPECIAL SEWING MACHINE CO, OF CHICAGO, ILLINOIS, A CORPORA- TION OF ILLINOIS.

FEEDING MECHANISM FOR SEWING-"MACHINES.

specification of Letters Patent. Patented Oct. 24, 1905.

Application filed November 9,1901. Serial No. 81,770.

T (I'll 1375 71 007M617 view of the connection between the feed-dog Be it known thatLRUssELG.VVOODWARD, and the adjustingscrew. Fig. is a side acitizen of the United States, residing at Wauview, partly in section, showing the correkegan. in the county of Lake, State of Illinois, sponding position of the various parts when 5 haveinvented certain new and usefulIrnprovethe needle is at its highest point.

ments in Feeding Mechanism for Sewing-Ma- In the drawings the feeding mechanism in chines, of which the following isadescription, general is operated in the manner customary reference being had to the accompanying in machines of the union special type and.

drawings and to the letters and figures of refmay be understood by referring to Patent No.

10 erence marked thereon. 299,568. The other parts of the machine are My invention relates to an improvement in shown in the applications of Onderdonk and sewing-machines, and particularly to a feedmyself above referred to. ing mechanism for machines designed for sew- A is the bed of the machine; B, the driving knit goods, the object of the invention ing-shaft; O, the feed-rocker, the parts he- I 5 being to provide a feeding device to engage ing actuated in the usual way from a crankthe goods ahead of the needle before the main pin on the end of the driving-shaft, the rockpart of the feed-dog acts, thus crowding the ing frame, and the cam on the driving-shaft 7 goods up to the needle and preventing puokto give the rise and fall to the feed-dog. ering after they have been sewed. As previously stated, in machines of this 20 I have designed the present invention for character for sewing knit goods it is desirable application to union special overseaming-mato crowd the goods toward the needle before chines, such as shown in my application for the stitching takes place to prevent pucker- Letters Patent filed of even date herewith, ing after the stitches have been passed through Serial No. 81,7 68, or such as shown in an apthe fabric, and an inclined feed-dog F is there- 5 plication filed jointlyby Lansing Onderdonk fore used, so arranged that as the upward and myself on the 9th day of November, 1901, movement takes place that part of it ahead of Serial No. 81,772; but it will be understood the needle will catch the goods first. To vary 30 that it is not desired to so limitthe use of the the inclination, the construction shown in invention, as it may be applied to other ma- Fig. 2 is preferably provided and maybe de- 3 chines. scribed as follows: The block 1, to which the Various devices for accomplishing the same feed-dog F is secured, is pivoted on a screwresult have been heretofore proposed--as, for bolt 2, attached to the rocking arm D, and 5 example, the provision of the feed-dog with said block is provided near its lower end with two sets of teeth of varying heights and pitch, an internal ball-shaped socket 3, with a slot 4 35 the use of separate feed-dogs, one moving in opening downwardly. Fitting in this socket advance of and faster than the other, &c.; is a ball 5 on the end of a rod 6, which rod 6 but the present invention affords a simple and projects to the rear of the machine and is proeffective means for accomplishing the same vided with asuitahle milled knob 7. The rod result. 6 is screw-threaded for a portion of its length,

4 The invention therefore consists in the matas shown at 8, and passes through a screwters hereinafter described, and referred to in threaded abutment 9 on the rocking arm I), v the appended claims. so that by manipulation of the knob the feed- 5 The invention is illustrated in the accomdog-supporting block may be swung on its panying drawings, in which pivot to vary the inclination of the feed-dog 45 Figure 1 is a sectional view of so much of a with respect to the line of the cloth-plate.

sewing-machine as is necessary to a complete In Figs. 3 and 4: is illustrated a modification understanding of my invention. Fig. 2 is a of the manner of securing the rod 6 to the view, partly in section, showing the prefeed-dog block. In this arrangement the block ferred form of feeding mechanism, the variis provided with a downward-slotted exten- 5 ous positions of the feed-dog being shown in sion 10 and having the ribs 11 formed therefull and dotted lines. Fig. 3 is a similar view in, the rod 6 being slotted to receive these of a modification, showing the original oonribs. struction devised by me; and Fig. 4 is adetail It Will be noticed that the feed-dog may be easily adjusted and without removing the cloth or throat plate and that said adjustment may be effected without stopping the machine.

Various minor modifications and changes in the construction of the parts may be made without departing from the spirit of my invention.

Having thus described my invention, what I claim as new. and desire to secure by Letters Patent, is-

1. In a sewing-machine having a cloth-plate, and a feeding mechanism includinga feed-dog, the cloth-plate surface and the entire feedingsurface of the feed-dog, being relatively in' clined to each other from front to rear in the direction of the feed, and the feeding-surface of the feed-dog engaging the fabric both in front and in rear ofthe needle across its en tire upper face; substantially as described.

2. Inasewing-machinehavingacloth-plate, and a feeding mechanism includinga feed-dog, the cloth-plate surface and the entire feedingsurface of the feed-dog, being relatively inclined to each other from front to rear in the direction of the feed, and the feeding-surface of the feed-dog engaging the fabric both in front and in rear of the needle across its entire upper face, and means for adjusting the relative inclination of the feeding and clothplate surfaces; substantially as described.

3. In a sewing-machine having acloth-plate, a feeding mechanism, including a feed-dog, whose feeding-surface from front to rear is inclined with respect to the cloth-plate surface and engages the fabric bothin front and in rear of the needle across its entire upper face, with means for operating the same, whereby the relatively high portion of the feed-dog will engage the fabric first and impart to it a forward movement before the stitching takes place, the fabric after stitching being fed forward by the feed,substantially as described.

4. A feeding mechanism for sewing-machines, including a feed-dog arranged with its entire upper feeding-surface inclined from front to rear in the direction of the feed with respect to the cloth-plate surface, and engaging the fabric both in front and in rear of the needle with means for operating the same, whereby the high portion of the feed-dog will engage the fabric first and impart to it a forward movement before the stitching takes place, the fabric after stitching being fed forward by the feed, and means for adjusting the inclination of the feed-dog; substantially as described.

5. A feeding mechanism for sewing-machines, including a feed-dog having its feeding-surface in front of the needle in a higher plane than the feeding-surface in the rear thereof, the entire feeding-surface being inclined with respect to the cloth-plate and in the direction of the feed whereby as the upward and forward movement of the feed takes place, that part of it ahead of the needle will catch and feed the goods first crowding the goods up to the needle; substantially as described.

6. A feeding mechanism for sewing-machines, including a feed-dog pivoted upon an axis transverse to the direction of its length, with means for imparting the feeding movements to the feed-dog, and means for adjusting the feed-dog on its pivot to vary the inclination of the feed-dog with respect to the cloth-plate surface; substantially as described.

7. A feeding mechanism for sewing-ma chines, including a feed-dog, a rocking arm upon which the same is pivoted to swing upon an axis transverse to the direction of its length, and arod for adjusting the same, freely connected to said feed-dog, and means for manipulating the rod; substantially as described.

8. A feed mechanism for sewing-machines, including a pivoted block to which the feeddog is secured, having a recessed slot, a rod having a head fitting the recess in said slot, and having a screw-threaded portion engaging the threads of a suitable abutment; substantially as described.

9. A feeding mechanism for sewing-machines, including a feed-dog pivoted to its supporting rocking arm, said supporting rocking arm being provided with a screwthreaded projection, and a rod provided with screw-threads engaging the screw-threads of the projection, and freely connected to said feed-dog, and means for manipulating the rod; substantially as described.

10. A feeding mechanism for sewing-machines, including a feed-rocker, and a feeddog pivoted to its supporting rocking arm, a rod for adjusting the same freely connected to said feed-dog and passing through an opening in the feed-rocker, and means for manipulating the rod; substantially as described.

11. Inafeeding mechanism for sewing-machines, including a pivoted member to which the feed-dog is connected, said pivoted member being provided with a slotted lower extension, and an adjusting-rod having a head fitting in said slotted lower extension; substantially as described.

In testimony whereof I afix my signature in presence of two witnesses.

RUSSEL Gr. WVOODWVARD.

Witnesses:

MORTON MGNEIL, JOHN SPEARMAN. 

